#!/sbin/sh
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
# Copyright 2014 Nexenta Systems, Inc. All rights reserved.

. /lib/svc/share/smf_include.sh

#
# Return a list of running, non-global zones for which a shutdown via
# "/sbin/init 0" may work (typically only Solaris zones.)
#
shutdown_zones()
{
	zoneadm list -p | nawk -F: '{
		if ($2 != "global") {
			print $2
		}
	}'
}

[ ! -x /usr/sbin/zoneadm ] && exit 0	# SUNWzoneu not installed

if [ -z "$SMF_FMRI" ]; then
	echo "this script can only be invoked by smf(7)"	
	exit $SMF_EXIT_ERR_NOSMF
fi

# Make sure working directory is / to prevent unmounting problems.
cd /
PATH=/usr/sbin:/usr/bin; export PATH

case "$1" in
'start')
	egrep -vs '^#|^global:' /etc/zones/index || exit 0  # no local zones

	#
	# Boot the installed zones for which the "autoboot" zone property is
	# set and invoke the sysboot hook for all other installed zones.
	#
	ZONES=""
	for zone in `zoneadm list -pi | nawk -F: '{
			if ($3 == "installed") {
				print $2
			}
		}'`; do
		zonecfg -z $zone info autoboot | grep "true" >/dev/null 2>&1
		if [ $? -eq 0 ]; then
			[ -z "$ZONES" ] && echo "Booting zones:\c"
			ZONES=yes
			echo " $zone\c"
			#
			# zoneadmd puts itself into its own contract so
			# this service will lose sight of it.  We don't
			# support restart so it is OK for zoneadmd to
			# to be in an orphaned contract.
			#
			zoneadm -z $zone boot &
		else
			zoneadm -z $zone sysboot &
		fi
	done

	#
	# Wait for all zoneadm processes to finish before allowing the
	# start method to exit.
	#
	wait
	[ -n "$ZONES" ] && echo .
	;;

'stop')
	egrep -vs '^#|^global:' /etc/zones/index || exit 0  # no local zones
	[ "`zoneadm list`" = "global" ] && exit 0   # no zones running

	SVC_TIMEOUT=`svcprop -p stop/timeout_seconds $SMF_FMRI`

	#
	# First, try shutting down any running zones for which an "init 0" may
	# work.
	#
	MAXSHUT=`expr 3 \* $SVC_TIMEOUT \/ 4` # 3/4 of time to zone shutdown
	MAXHALT=`expr $SVC_TIMEOUT \/ 4`      # rest of time goes to halt

	zonelist=`shutdown_zones`

	if [ -n "$zonelist" ]; then
		SHUTDOWN=0
		echo "Shutting down running zones (for up to $MAXSHUT" \
		    "seconds):\c"

		for zone in $zonelist; do
			echo " $zone\c"
			zoneadm -z $zone shutdown &
			SHUTDOWN=1
		done

		[ $SHUTDOWN -eq 1 ] && echo "."

		# Allow time for zones to shutdown cleanly

		while [ $MAXSHUT -gt 0 -a "`shutdown_zones`" != "" ]; do
			MAXSHUT=`expr $MAXSHUT - 1`
			sleep 1	# wait a bit longer
		done
	fi

	#
	# Second, try halting any non-global zones still running
	#
	WAITPIDS=""
	for zone in `zoneadm list`; do
		if [ "$zone" != "global" ]; then
			[ -z "$WAITPIDS" ] &&
			    echo "Zones failed to shutdown; trying to halt " \
			    "(for up to $MAXHALT seconds):\c"
			echo " $zone\c"
			zoneadm -z $zone halt &
			WAITPIDS="$WAITPIDS $!"
		fi
	done
	[ ! -z "$WAITPIDS" ] && echo .

	# Wait for the 'zoneadm halt' commands to complete.  We will let this
	# run forever, since the restart daemon will eventually kill us off
	# anyway if the halts do not complete after a certain period of time.
	wait $WAITPIDS

	# If the halts complete but a zone is still not shutdown, it might
	# be in a state like 'shutting_down' or 'down'.  So we give it some
	# time to come all the way down.

	while [ $MAXHALT -gt 0 -a "`zoneadm list`" != "global" ]; do
		MAXHALT=`expr $MAXHALT - 1`
		sleep 1	# wait a bit longer
	done

	# If there are any remaining file systems in zones, try to unmount them.
	umountall -Z

	#
	# Report on zones which failed to shutdown.
	#
	for zone in `zoneadm list`; do
		if [ "$zone" != "global" ]; then
			echo "Zone '$zone' failed to halt."
		fi
	done
	[ "`zoneadm list`" != "global" ] && exit 1   # zones still running
	;;

*)
	echo "Usage: $0 { start | stop }"
	exit 1
	;;
esac
exit 0
